//
// Copyright (c) 2010 Luís Reis
//
// MIT License
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
using System;
using System.Collections.Generic;
using Pine.Lexer;
using SP=Pine.SourceParser.pinedl;

namespace Pine.SourceParser
{
	public class TokenQueue : ITokenTarget, Antlr.Runtime.ITokenSource
	{
		private Queue<Token> tokens = new Queue<Token>();
		public TokenQueue ()
		{
		}
		
		public void Write(Token token) {
			tokens.Enqueue(token);	
		}
		
		public Token Read() {
			Token t = tokens.Dequeue();
			return t;
		}
		
		public Antlr.Runtime.IToken NextToken() {
			Pine.Lexer.Token t = Read();
			if (t == null) {
				return new Antlr.Runtime.CommonToken(SP.EOF);
			}
			
			return new AdaptedToken(t);
		}
		
		public string SourceName {
			get {
				return "sourcename";
			}
		}
	}
}

